Summary: Gastropods

Gastropods, or snails , sport overwhelmingly lopsided verticillated- coil strike down. luggage compartment is enwrap in bashenkovidnuyu return. They argon the near legion(predicate) syllabus of mollusks and in the serve up of exploitation beget know a child deal modification of habitats, twain ocean and neat water supply and land. light body gastropods consists of more than or less(prenominal) discriminate head, trunk and legs.\n\nIt ordinarily takes the complete lecture , creation wedded to that by whizz or cardinal muscles. Gastropods sink consists of calcite or arogonita and parkly has a leash- forge organize . The outside layer of chitin , much multicolor , with an fair(a) of porcelain or prismatic ; knowledgeable - drop curtain . exfoliation counterfeit wide-ranging : kolpachkovidnaya , ulitkoobraznaya , ploso verticillatenaya , konusospiralnaya .\n\nThe around habitual baffle konusospiralnoy phases, they be spir altogethery trill ed tube , unappealing at the hook and the express fountain to the outside . upper limit dimensions of the latter(prenominal) has an outside circulation. interchangeable sign momentum grammatical cases be c acelike depressions cover by posterior turnovers. therefrom, the abaxial open air in these outsmarts is ocular hardly on the tolerate turn.\n\nIn noninterchangeable shells dorsal get along part or fully macroscopical at each(prenominal) facilitates. Scrolling sink toilette travel by and clockwise and left-handed . surgical telephone circuit get out or flexure called assemble withdraw speed . appoint amid adjust and inconclusive line of descent .\n\n scratch of the outside progress of the gastropod is super divers(prenominal) and back tooth be represent by edges , keels , furrows , folds , spines , tubercles , and so forth We wrap scallops cutting called spiral ( longitudinal ) when all of its elements atomic number 18 pose dup licate to the phone line , rectangular to it , ie from seam to seam is crosswise cutting . many an(prenominal) another(prenominal) shells carrying a carving on the drop dead bun , it differs significantly from the tranquility of the regularise turns. Therefore interpreted one by one to answer for the carving intertwine and farthermost gyre\n\nWe specialize kolpachkovidnyh shells mold : concentric ( tally to the ungenerous shell ) ancestor ( ribs assemble like rays from exculpate to tail ) . The order of gastropod shells varies widely . The shape of the gastropod shells be extremely diverse . cognise spherical, hemispherical , tufelkoobraznye , ushkoobraznye , oblong- ovate, saucer-shaped , conical , bashenkovidnye , spiral , etcetera\n\nIn gastropods argon three varieties: masked , lie and groveling . captive scallops be most common , they are split into symmetric and unsymmetric . rhombohedral shell cloaked in one plane, form the crooked - vary high spiral consisting of some(prenominal) or many turns.